A paetnebship association



June 2, 1931. o. SANDBERG WRAPPING MACHINE Filed April 19, 1929 4 Sheets-Sheet 1 Zhwenfor (Ittornegs June 2, 1931. o. SANDBERG WRAPPING MACHINE Filed April 19. 1929 4 Sheets-Sheet 2 Cammmmwj Citt orneg June 2, 1931. o. SANDBERG 1,807,756

' WRAPPING MACHINE Filed April 19, 1929 4 Sheets-Sheet 3 June 2, 1 931. o. 'SANDBERG 1,807,756

WRAPPING MACHINE F'Jfled April 19. 1929 4 Sheets-Sheet 4 Patented June 2, 1931 UETD STATES PATENT orrlcr.

OSCAR SANDBERG, OF BATTLE CREEK, MICHIGAN, ASSIGNOR TO JOHNSON AUTOMATIC SEALER 00., LTIL, F BATTLE CREEK, MICHIGAN, A PARTNERSHIP ASSOCIATION LIMITED OF MICHIGAN WRAPPING IMACHIN E Application filed April 19, 1929. Serial No. 356,565.

vide a wrapping machine having improved package engaging pushers or the like that advance the packages past the wrapping means by movement of said pushers along I closed or orbital paths.

Another object of the invention is to provide a wrapping machine having improved wrapper folding means exerting a knife like folding action on the wrappers to accurately and securely fold them on the packages.

Another object of the invention is to provide a wrapping machine having improved means for registering the'package with respect to the wrapping means.

Another object of the invention is to provide an improved Wrap ding machine simply constructed, efficient, and inexpensive to manufacture, install, and maintain in operation.

These and other objects will appear as the following description of the invention pro- I ceeds, and in order to more clearly understand the invention reference may be had to the appended drawings which illustrate one embodiment of the inventive idea.

In said drawings- 7 Fig. 1 is a side elevation of a wrapping machine embodying the present invention;

Fig. 2 is a top plan view of the machine shown in Fig. 1;

Fig. 3 is an enlarged detail perspective view of package advancing means shown 111 Fig. 1

Fig. A is an endview of one of wrapper folding devices shown in Figs. 1 and 2;

Fig 5 is'a transversehorizontal sectional view on the line 55 of Fig. 4:;

Fig. 6 is a detail perspective view of folder operating means shown in Figs 1 and ll; and

Fig. 7 is an enlarged detail perspectlve view of wrapper-folding devices and associated operating mechanism therefor.

Referring to the drawings, wherein like reference characters designate like parts throughout the several views, said drawings illustrate a wrapping machine having a machine frame work, driving mechanism, package advancing means, lower end folders, rear and top end folders, front end folders and package sealers, and package cooling devices. These instrumentalities will be described in the order named and are. preferably constructed and operated as follows.

Mac/zine framework Figs. 1 to 3 inclusz'ee and 7 The machine framework comprises side frames 5, 6 of general rectangular form and provlded with legs such as indlcated at'7, 8

that are bolted or otherwise suitably secured at 9, 10, respectively, to the machine foundation 11. The frames 5, 6 are connected together at the tops thereof by cross members or yokes 12, 13 that are bolted or otherwise suitably secured, as at 14, 15, respectively to said side frames.

Bolted or otherwise suitably secured, as at 16, 16, on the cross member 12, are spaced rails 17, 17 that extend longitudinally of the machine and have their front ends projecting therefrom and supported on the cross member 13. The rails 17, 17 support the packs ages 18 as they are advanced through the machine by mechanism to be hereinafter described. The packages 18 are placed on a table 19 which is secured at 16, 16 and 20, 20 on the rails 17 at the rear of the machine. The packages 18, either before or after be ing placed on the table 19, each have a wrapper 21 positioned thereon to provide an overlapping seam 22 on the bottom of the pack age, and lower, rear, upper, and front portions 23, 24, 25, and 26, respectively, that project from both ends of the package and are folded in the order named by devices hereinafter described. 7 V

The packages 18 are fed by hand from table 19 onto'rails 17 and while'being advanced along the rails 17 past the folding devices, said packages are engaged by a vertically adjustable top rail 27 provided with vertical standards 28, 28. The standards 28,

28 have adjustably secured thereon, as at 29, 29, collars 30, 30 that rest on the horizontal arms 31, 31 of brackets 32 for supporting the top rail 27 in engagement with the tops of the packages. The arms 31, 31 are provided with suitable openings through which the standards 28, 28 project, and the vertical arms 33 of the brackets are bolted or otherwise suitably secured, as at 34, 34, on the side frame 5 at the top thereof.

Dri'vi'n mechanism Fins. 1 t0 3 inclusive W 7 and Bolted or otherwise suitably secured, as at 35, 35, to the side frame 6 at the bottom and rear thereof, is a support 36 for an electric motor 37. The motor 37 serves to drive the various movable instrumentalities of the machine, and said motor and said instrumentalities, may be separately controlled by a switch and a clutch respectively, in a manner well understood in the art, or said motor and said instrumentalities may both be controlled by a switch 38 interposed in the line 39, 40 for supplying electrical current to the motor from any suitable source. The switch 38 is preferably secured to the side frame 6 at the rear thereof, and the motor 37 is provided with the usual armature shaft 38 on which is fixed a pulley 40.

Passing around the pulley 40 is a belt 41 that also passes around a pulley 42 which is fixed on a shaft 43 journaled in suitable bearings on the side frame 6 near the top and at the front thereof. Fixed on the shaft 43 is a sprocket 44 around which passes a chain 45 that also passes around a sprocket 46 which is loosely mounted on a rock shaft 47 extending transversely of the machine and journaled in suitable bearings on the side frames 5, 6 at the bottom thereof. Tension on the chain 45 may be regulated as desired, by a small sprocket 4S engaging said chain and journaled on an arm 49 adjustably pivoted at 50 on the side frame 6 at the front there of. The sprocket 48 is maintained in engagement with the chain 45 by a spring 51 which has its opposite ends secured to the arm 49 and the side frame 6, respectively.

Secured to or formed integrally with the sprocket 46 is a sleeve 52 which is loosely mounted on the rock shaft 47. This sleeve 52 has fixed thereon a sprocket 53 around which passes a chain 54 that also passes around a sprocket 55 which is fixed on a shaft 56. The shaft 56 extends transversely of the machine and is jonrnalcd in suitable bearings on the side frames 5, 6 thereof. Tension on the chain 54 may be regulater as desired by a sprocket 57 which engages said chain and is adjustably mounted on a bracket 58 bolted or otherwise suit-ably secured to the side frame 6.

Package advancing mechanism, Figs. 1 t0 5,

inclusiee The shaft 56 constitutes the main driving shaft for the package advancing mechanism, and for this purpose said shaft has fixed thereon a cam 59 in the groove 60 of which is engaged a roller 61. The roller 61 is journaled at 62 on a link 63 provided at one end with a fork 64 that is engaged over the shaft 56. A. link 63 is pivotally connected at 65, 66, with the arms 67, 68, respectively, of bell cranks 69 and 70. These bell cranks are journaled on stay shafts 71 and 72, respectively, which extend transversely of the machine and are secured in any suitable manner on the side frames 5, 6 thereof. The other arms 7 3, 74 of the bell cranks 69, 70, respectively, have pivotaliy mounted on their free ends the vertical 10,, 75 of a frame member 76.

Jonrnalcd on the stay shafts 71, 72 are bell cranks 77, 78, respectively, the arms 79 and 80 of which are pivotally connected by a link 81. The other arms 82 and S3 of the last named bell cranks have pivotally connected therewith the vertical legs 84 of a second frame member 85. The bell cranks 69 and 78, are pivotally connected at 65 and 86 by a bent link 63. The frame members 76, a'iove referred to comprise a rocking frame that is rocked up and down by the bell cranks and the described connections therefor with the cam 59.

Fixed on the shaft 56 at one end thereof, is an arm 37 the free end of which is pivotally connected. as at 88, with one extremity of a link 89. The opposite extremity of the link 89 is pivotally connected, as at 90, with a slide that carries a bar 91. The bar 91 is adiustably secured, as by pin and slot connections 90, 92, and 93, 94, on the slide 95. This slide member 95 is arranged for reciprocating movement in guides 96 formed on the legs 75 of the frame member 76.

Bolted or otherwise suitably secured on the bar 91, at 97, 97, are brackets 98. These brackets have bolted or otherwise suitably secured thereto, as at 99, 99, a bar 100 that extends longitudinally of the machine in parallel relation with the slide 95. A frame member 101 is slidably mounted on the frame member 65 and the bar 100 and the frame member 101 are connected together at the opposite ends thereof by a straight cross memher 102 and an angular cross member 103, respectively. Bolted or otherwise suitably secured at 99', 9t on the cross members 102, 103, a bar 104 which extends in spaced parallel relation with the bar 100. The bars 100. 104 have adjustably mounted thereon, as by pin and slot connections 105, 106, a plurality of spaced, transversely alined package pushers 107, 107, 107". The slide 95, the frame member 101, the cross members 102, 103, and the bars 100, 104, thus comprise a sliding 7 similar path.

lame carrying the package advancing pushand reciprocated therewith on the rocking .ranie 76, by the described connections for the slide wit-h the rotating arm '87.

The sliding frame above referred to may, through the provision of the adjustable bar 91, be adjusted longitudinally as desired on the slide 95 and the frame member 85, and the pushers 107, 107 and 107 may, through the provision of the pinand slot connections 105, 106, be adjusted longitudinally as desired on the bar 100, 10 1. These adjustments for said frame and said pushers are made with respect to reciprocating and swinging folding devices hereinafter described, and enable said pushers to always advance the packages in such relation to said folding devices that perfect wrapping thereby of the wrappers on said packages is insured. Furiber, the aforesaid adjustments also enable the machine to handle and warp packages of various sizes.

The frame 7 6, 85, as above pointed out, is rocked up and down and carries the sliding frame on which the package pushers are mounted. The package pushers thus move up and down with the frame 76, 85 and are also reciprocated longitudinally on said frame by the described connections for said pushers with the arm 87. The timing of the various movable parts of the package advancing mechanism is such that the pushers 107, 107, 107 move upwardly past the 17 to engage the packages thereon, then forwardly to advance the packages along the rails, then downwardly past the rails, and thereafter rearwardly and upwardly to engage and advance successive packages on the rails. The packages successively fed onto the rails 17 from table 19, are thus intermittently advanced through the machine by several sets of pushers 107, 107, 107' that move continuously in closed or orbital paths through movement of the pusher carrying frame in a uring advancing movement of the packages as aforesaid, they are successively wrapped by folding devices which will now be described.

"in "D Lower and folding (lee ices, Figs. 1, 2, 1 an The lower end folding devices 108 are ar .L b jonrnaled on an arm 112 aivoted at 113 on a bracket 11 1-. This bracket 11 1 is bolted'or otherwise suitably secured on a cross member 115. The cross member 115 extends transversely ofthe machine at the rear there of and is bolted or otherwise suitably se cured to the side frames 5, 6. Bolted or otherwise suitably secured on the cross mem her 115, is a forwardly and downwardly projecting bracket 116 provided therein with a slot 117 through and in which the arm 112 projects and is guided, respectively. The free end of the arm 112 has pivotally connected therewith, as at 118, one extremity of a two-part-link 119. The parts of this link are adjustably connected together, as by pin and slot connections 120, 121, and the opposite extremity of said link is pivotally connected, as at 122, with the free end of an arm 123. This arm 123 is fixed on the rockshaft 4-7 which also has fixed thereon oppositely extending arms 12a and 125, 125, respectively. The arm 12% is provided at its free end with a counterweight 126 and one of the arms 125 has connected therewith the lower end of aspring 127 the upper end of which is connected with the side frame 5 at the top thereof.

ixed on the free ends of the arms 125, is a shaft 128 having pivot-ally connected therewith the lower ends of links 129. The upper ends of links 129 are pivotally con nected at 130, with slides 131. The slides 131 are arranged for vertical reciprocating movement in guides 132 that are secured to or formed integrally with brackets 133, bolted or otherwise suitably secured to the machine frame work at the top thereof. The slides 131 are retained against lateral displacement from the guides 132, by strips or plates 131, 135, that engage over the Slit es and are bolted or otherwise suitably secured to said guides.

Bolted or otherwise suitably secured on the slides 131, as at 136, 136, are T-brackets the vertical arms 137 of which are bent inwardly of the machine to'provide short horizontal arms 138. Secured to or formed integrally with the arms 138, and extending at right angles thereto, are plates or bars 139 on which the folders 108 are bolted or otherwise suitably secured. The folders 108 move up and down past the rails 17, and when a package is pushed adjacent the folders by one of the sets of package pusher-s, said folders act, through the described operating mechanism therefor, to engage the lower projecting end portions 23 of the wrapper and fold them. u on the ends of the package.

Rear (ma? top and folding mechanisms,

' Rigel 1, 2 and/7 While the package is stopped, and after the lower end folds have been made the rear 7 and top pro ecting end portions 24, 25 of the wrao Jer are folded 111 the order named.

i a In accordance w1th the present invention, the last mentioned end folds are made by knife like devices that securely and accuratel fold in the ore ectin rear and to") end i a 1 v 1 portions of the wrapper. 'lwo knife folders 140 are provided, one for each end of the package, and two sets of operating devices for the folders are preferably employed and actuate them simultaneously after the lower end folds have been made by the folders 108. The knife folders and operating mechanisms therefor are each preferably actuated and constructed as follows.

Each of the guides 132 has mounted on the strip 135 thereof, a vertically disposed channel member 141 opening inwardly of the machine. The channel member 141 may, if desired, be secured to the guide 132 by the same bolts or fastening devices that secure the strip 135 thereto. The channel of the member 141 is adapted to receive for upward movement therein, a roller 142 that is journaled on one end of an arm 143. This arm 143 is journaled at 144 on one extremity of the part 139 of bracket 13?. The arm 143 and the slide 131 thus move together as the latter is reciprocated. Bolted or otherwise suitably secured on the end of the arm 143 opposite that carrying the roller 142, is a knife folder 140. This knife folder has two blades 145, 146 that are preferably formed integrally ant act successively to fold in a rear end wrapper portion 24 and a top end wrapper portion 25 in a manner to be presently described. When the slide 131 and the folder 108 move upwardly, the folder is likewise moved therewith. In the upward movement of the folder 140, the roller 142 travels upwardly in the channel of the member 141. At the instant the folder 108 turns up the lower end fold 23 of the wrappe the roller 142 engages a cam 147 secured to or formed integrally with the channel member 141 and projecting upwardly and roarwardly therefrom.

lilngagement of the roller 142 with the cam 14: and continued upward movement of the folder 140 with the slide 131, causes said folder to swing in a counterclockwise direction (Fig. 7) about the pivot 144, so that the blade folds in the projecting end portion of the wrapper over the folder 108 and the wrapper portion 23 previously folded thereby. The folders 108, 140 now descend with the slide 131, and the roller 142 is prevented from passing downwardly through the channel of member 141 by a stop 14S pivoted, as at 149, on the top of the channel member 141. This stop swings upwardly when the roller 140 engages it and moves along the cam 147 the free end of the stop. Thereafter, the stop drops by gravity and prevents the roller 140 from re-entering the channel member 141 through the upper end thereof. The roller 142 of the descending folder 140 being prevented from re-entering the channel of member 141 through the top thereof, travels down the outer rear side of said member into engagement with a cam 150 bolted or otherwise suitably secured thereon. Engagement of the roller 142 with the cam 150 swings the folder 140 still further in a counterclockwise direction (Fig. 7 so that the blade 146 bends down the top projecting end portion 25 of the wrapper. As the folder 140 and the slide 131 continue to descend, the blade 146 completely folds the projecting end portion 25 of the wrapper onto the previously folded end portions thereof, whereupon the package is left in position to be advanced to other devices hereinafter described.

Near the limit of the downward movement of the folders 108, 140 and the slide 131, the roller 140 passes off a cut-away, inturned portion 151 formed on the member 141 at the lower end thereof. The roller 142 is then pulled into the channel of the member 141 by a spring 152, that has its opposite ends connected with the arm 143 and a bracket 153, respectively. The bracket 153 is bolted or otherwise suitably secured to the guide 132. It will of course be understood that the spring 152 acts to maintain the roller 142 in engagement with the front inner wall of the channel member 141, the inner surface of cam 147, the outer surface of the rear wall of channel member 141, and the surface of the cam 150, the spring being expanded through the engagement of the roller with the parts just mentioned, and said spring thereafter contracting to swing the folder 140 in a clock wise direction (Fig. 7) when the roller 142 rides off the portion 151 of channel member 141.

The folders 108 and 140 having been lowered so that each roller 142 is engaged with the front inner wall of one of the channel members 141, the folders are again raised and operated as before described, to fold in the lower rear and top projecting end portions of the next package advanced to said folders.

Front end folders and package sealers, and package cooling devices, Figs. 1, 2 and '7 After the bottom, rear and top projecting end portions of the wrapper have been folded on the package, the latter is advanced by the set of pushers engaged therewith, between devices that fold in the front projecting end port-ions 26 of the wrapper, seal the ends of the package, and cool the same. The front end folding and package sealing devices are preferably comprised by spaced plates 154 which fold in the front projecting end portions 26 of the wrapper as the package is advanced between said plates by the package advancing means. These plates are heated by suitable resistance elements 155, 156, secured to the plates in any suitable manner and connected with any suitable source of electrical current by lead wires 157, 157 or the like.

The scaled package is cooled by plates 158, 158, positioned in advance of the plates 154,

154, and artificially cooled, if desired, in any suitable manner. The plates 158, 158, and

the plates 154, 154, are supported on brackets '159, 159, that extend longitudinally of the Package registering device, Figs. 1, 2 and '7 In accordance with the present invention means are provided for registering the pack age with respect to the folding devlces and preferably when the package is fed froln table, 19 onto the package supporting rails 17. The package registering means is preferably operated and constructed as follows.

Fixed on the arm 68 of bell crank Y70 and projecting laterally therefrom, is a pin 162 to which is pivotally connected at'163 one extremity of a link 164. This link is bent irregularly along its length to avoid obstruction of moving parts adjacent thereto, and the opposite extremity of said link is pivotally connected as at 165 with the free end of a horizontally extending arm 166. This arm 166 is fixed on the lower end of a vertically disposed shaft 167 journaled in a suitable bearing 168 projecting through a suitable opening in the rear cross member or yoke 12 and secured thereto in any suitable manner.

Fixed on or formed integrally with the shaft 167 at the upper end thereof, is an L- shaped, horizontally extending arm 169, the free end of which has adjustably mounted thereon, as at 170, a horizontally extending arm 171. Bolted or otherwise suitably secured, as at 172, on the arm 171 and extending at right angles thereto inwardly of the machine, is a package registering finger 173 which is adapted to engage the end of a package placed on the rails 17 to be advanced therealong by the rearmost set of pushers 107. As these pushers rise to engage the package, the register finger 178 engages one end of the package which, if not directly alined with the folding devices, is moved endwise by said finger into register with saiddevices. Rocking movement of the register finger 173 is imparted thereto in timed relation with the package advancin means by the described connections for said finger with the rocking bell crank arm 68.

Operation The operation of themachine will be clearly understood from the foregoing and may be briefly summarized as follows. he packages, as previously pointed out, all have wraptable.

end portions of the wrapper on pers placed thereon which, if desired,are overlapped and sealed on the bottoms of the packages. The wrappers project from opposite ends of the packages and the latter are stacked on the table 19 and hand fed one by one onto the rails 17 directly in front of said Each package, when delivered onto the rails 17, is engaged with the register finger 173 whichhas been moved inwardly of the machine and registers the package with re spect to the folding devices 108, 145, 146, the

folding and heat sealing plates 154, and the cooling plates 158. 7

After the package has been registered as aforesaid, the register finger 173 is moved outwardly of the machine and the package advancing means rises so that the pushers 107 engage the package at the rear thereof. The package advancing means then moves forwardly, and the pushers 107 advance the" package along the rails 17 and under he rail 27, to a position adjacent the folders 108, 145, 146. These folders fold in the bottom, rear, and top projecting end portions of the wrapper successively, whereupon the package advancing means lowers, moves rearwardly and then upwardly to engage the pushers 107 with a second package previously placed on the rails 17 and registered with respect to the folding devices as aforesaid. Raising movement of the package advancing means the second time, engages the pushers- 107 'with the first oacka e and said )ackage and the second package are then advanced by the pushers 107, 107 to the plates 154, and the end folders 108, 145, 146, respectively. The plates 154 fold in the front projecting end portions of the wrapper on the first package and seal the ends thereof. The end folders fol'd inthe bottom, rear, and top projecting the second package.

The package advancing means again lowers, moves rearwardly, and then upwardlyto engage the pushers 107 with a third package previously positioned on the rails 17 and registered by the finger 173 with respect to the end folding devices. 'VVhen the package ad- 'vancing means moves upwardly to engage the pushers 107 with the'third package, the push ers 107 and 107 are engaged with the second package andthe firstpackage, respectively. The package advancing means again moves forwardly so that the pushers 107" deliver the first package from the machine past the cooling devices 158, the pushers 107 advance the second package between the plates 154,

and the pushers 107 advance the third package to the folders 108, 145, 146, to be end folded'thereby. The second package is thus tially continuous manner as the packages are fed from the table 19 onto the rails 17, and it will thus appear that the packages so fed are successively advanced along the rails by the package advancing means, end folded, sealed, and cooled by the described devices for these purposes, and delivered from the machine to be supplied to the trade.

While one embodiment of the invention has been illustrated and described herein with more or less particularity, it is to be expressly understood that the invention is not limited to said embodiment, or otherwise than by the terms of the appended claims.

What is claimed is:

1. In a machine of the character described, package wrapping means, package supporting means extending past the package wrapping means, pivoted means for successively registering packages on the supporting means with respect to said package wrapping means, package advancing devices for moving the registered packages in succession from the registering means along the supporting means and past the wrapping means, and means for moving said package advancing devices along closed paths to engage, advance, and release the successive packages.

2. In a machine of the character described, package wrapping means, package supporting means extending past the package wrapping means, a pivotally mounted finger, means for rocking said finger to position it so that a package placed on the supporting means and engaged with the finger is registered with respect to the package wrapping means, and means for advancing the registered package along the supporting means and past said wrapping means.

3. In. a machine of the character described, package wrapping means, package supporting means, a finger pivotally mounted adjacent the package supporting means and adapted to register a package thereon with respect to the package wrapping means, means for rocking said finger to operative and inoperative positions, and means for advancing the registered package along the package supporting means and past the package wrapping means to be wrapped. thereby.

4. In a machine of the character described, a feed table, package supporting means extending forwardly thereof, package wrapping means disposed adjacent the package supporting means in spaced relation with the feed table, a finger pivotally mounted adjacent the feed table and adapted to be engaged by a package transferred from the feed table onto the package supporting means, means for moving said finger to position it so that a package engaged therewith is registered with respect to the package wrapping means, and means for advancing the registered package along the supporting means and past said wrapping means to be wrapped thereby.

5. In a machine of the character described, interconnected lower, rear, and upper end folders, automatically operated means for advancing packages in succession past said folders and automatically operated means acting in timed relation with said first named means to operate the lower, rear, and upper end folders successively so that they may likewise fold in lower, rear, and upper projecting end portions of a w 'apper on each package as it is advanced past said folders.

6. In a machine of the character described, interconnected lower, rear, and upper end folders past which packages are advanced in succession, means for operating said folders automatically so that they may fold in lower, rear and upper projecting end portions successively of a wrapper on each package advanced past said folders, package advancing devices operated automatically in timed relation with the folders and adapted to move the packages in succession past said folders to be wrapped thereby, and means for mov ing the package advancing devices along closed paths to engage, advance, and release the successive packages at predetermined intervals.

7. In a machine of the character described, interconnected lower, rear and upper end folders past which packages are moved in succession, front folders and package scaling means past which the packages are also moved in succession, devices for advancing the packages in succession past the said folders and said sealing means whereby they may fold in projecting end portions of wrappers on the packages and seal the wrappers on said packages, means for moving said package advancing devices along closed paths to engage, advance, and release the successive packages, and mechanism for automatically operating said lower, rear, and upper end folders in timed relation with said last named means.

8. In a machine of the character described, a slidably and pivotally mounted folder movable toward and away from a package, a guide member, a roller on the folder engaged in the guide member on movement of said folder toward the package, a cam adapted to engage the roller to move it out of the guide and swing the folder in one direction. and means for swinging the folder in the opposite direction and adapted to more the roller into the guide when the folder moved away from the package.

9. In a machine of the character described, a slidably and pivotally mounted folder mov able toward and away from a package. a guide member, a roller on the folder engaged in the guide member on movement of said folder toward the package, a cam at one end of the gui le member adapted to engage the roller to move it out of the guide and swing the folder in one direction, means for preventing the roller from reentering the guide at said end thereof and providing for movement of the roller out of the guide, and means for swinging the folder in the opposite direction and adapted to move the roller into the guide through its opposite end when the folder is moved away from the package.

10. In a machine of the character described, interconnected, automatically oper ated reciprocating and swinging end folders, package supporting means extending past the end folders and along which packages are advanced to have wrappers thereon end folded by said folders, spaced members for advancing packages in succession along said supporting means and past the end folders, a pair of relatively movable frames one carried by the other and on which the spaced members are mounted for adjustment with respect to the interconnected reciprocating and swinging end folders, and means for moving said frames, whereby said members engage, advance, and release successive packages on the package supporting means.

11. In a machine of the character described, interconnected, automatically operated reciprocating and swinging end folders, package supporting means extending past the end folders and along which packages are advanced to have wrappers thereon end folded by said folders, a series of spaced members for advancing packages in succession along said supporting means and past the end folders, rocking frame members, a sliding frame carried thereby and on whicn the series of spaced members are mounted for adjustment with respect to the reciprocating and swinging end folders, and means for rocking and sliding said frame members and said frame respectively, whereby said series of spaced members engage, advance, and release successive packages on the package supporting means. 7

. 12. In a machine of the character described, interconnected reciprocating and swinging end folding devices, package supporting means extending past the end folding devices and along which packages are advanced to have wrappers thereon end folded by said devices, means for reciprocating the end folding devices and for swinging one of them with respect to the other, a plurality of spaced members for advancing packages in succession along said supporting means and past the end folding devices, a pair of rocking frame members, a slide on one of the rocking frame members, a frame carrying the spaced package advancing members and slidablyengaging the other rocking frame .member, means adjustably securing said frame to said slide whereby the package advancing members may be adjusted with respect to the end folding devices, and means for rocking said frame members and for re ciprocating said slide and said frame, whereby the package advancing members engage, advance, and release successive packages on the package supporting means.

13. In a machine of the char cter described, interconnected, automatically operated reciprocating and swinging end folding devices, package supporting means ext-ending past the end folding devices and along which packages are advanced. to have wrappers thereon end folded by said devices, a plurality of spaced members for advancing packages in succession along said supporting means and pastsaid end folding devices, rocking frame members, a frame slidably mounted on the rocking frame members, means securing the spaced package advancing members on said frame and providing for adjustment of said members with respect to each other and to the end folding devices, and means for rocking said frame members and for reciprocating the frame, whereby the spaced package advancing members engage, advance, and release successive packages on the package supporting means.

14. In a machine of the character described, fixed horizontally extending means for supporting packages to be wrapped, a stationary guide adjacent thereto, a vertically reciprocating wrapper plate holder slidably mounted on the stationary guide and carrying a wrapper folding plate, a single wrapper folding blade pivot-ed on the plate holder to reciprocate vertically therewith and swing forwardly and rearwardly about a horizontal pivot thereon, said blade being formed to fold a plurality of end portions of a wrapper, means for reciprocating said holder, the wrapper folding plate and the blade vertically on said guide, means for swinging the blade forwardly and rearwardly on the holder, and means for advancin the oackages horizontally in succession aiong said supporting means and past said folding plate and said blade to be folded thereby.

15.- In a machine of the character de scribed, a folder fora stationary guide, package wrapping means slidably mounted on said guide and adapted to reciprocate vertically thereon, package wrapping means com prising a plate fixed on theholder and a single blade pivoted on said holder and adapted to reciprocate vertically therewith and swing forwardly and rearwardly about a horizontal pivot thereon, said blade being formed to fold a plurality of end portions of a wrapper, movable package advancing means adapted to advance packages horizontally in succession past the package wrap,

ping means, and means for operating the package wrappmg means and said package advancing means.

16. In a machine of the character described, package sealing and cooling dev1ces, automatically operated reciprocating end tomatically suppertr DPRDS and past the reciprocating and swni mg end folding devices, means for moving said members whereby they engage, advance, and release successive packages on the paeka supporting means, anu means adjustably securing the spaced interconi'iected package advancing members to the last named means whereby said members may be adjusted with respect to the reciprocating and swinging end foldin devices.

17. In a machine or the character described, a stationary feed table, stationary package supporting means extending torwardly oi? the feed table, interconnected auoperated reciprocating and swinging package rapping n'ieans disposed adjacent the package supporting means and forwardly of the feed table, package advancing devices for moving packages in succession from the feed table along the supporting means and past said wrapping means, rocki r and sliding means carrying the package advancing devices, means securing said devices to the rocking and sliding means and providing for adjustment of the former with respect to the package wrapping means, and means or operating the rocking and sliding means whereby the package advancing devices engage, advance, and release successive packages on the package supporting means.

l8. In a machine or the character described, package w 'apping means, heat sealing means, package cooling means, means tor amomatically reciprocating the package wrapping means and for swinging parts of said package wrapping means back and forth on die ren'iaining parts thereof, devices for advancing packages in succession past the package wrapping, heat sealing, and cooling means whereby they may wrap, heat seal and cool the packages, rocking and sliding means tl\11 -Ju1" sa id devices and on which the latter are mounted for adjustment with respect to to the package wrapping means, and means for operating the rocking and sliding means whereby the package ad ancing devices enge, ,dvance and release successive packes acted upon by the package wrapping, heatsealing, and package cooling means.

in a package wrapping machine, packwrapping devices, means for advancing asre packages past said devices to be wrapped thereby, rocking and sliding means on which the package advancing means are mounted, means for adjusting the package advancing means with respect to the rocking and sliding means and the package wrapping devices, and mechanism for operating the rocking and sliding means and the package ad ancing' leans.

20. In a package wrapping machine, packa w ripping devices, rocking means, a slide thereon, package advancing means slidably engaging a part of the rocking means, a bar aujustably connecting said slide with the package advancing means whereby the latter may be adjusted with respect to the package wrapping devices, mechanism for operating the rocking means and the slide, and mechanism for reciprocating the slide and the pack age advancing means on the rocking means, whereby said package ad *ancing means may move packages past the package wrapping devices to he rapped thereby.

21. In a package wrapping machine, package wrapping devices, means for advancing packages past said devices to be wrapped thereby, a front set of rocking levers, a rear set of rocking levers, a pair of frame 11111D bers pivotally mounted on said levers, a slide arranged to reciprocate on one of said frame members, means on the other frame member slidably engaging the package advancing means, means adjustably securing the package advancing means to said slide whereby the package advancing means may be adjusted with respect to the package wrapping devices, mechanism for reciprocating the slide and the package advancing means, and mechanism for rocking said levers and frame members including a pair of parallel links connected with the front and rear levers respectively and a link extending diagonally across the machine and connected with one of the front levers and one of the rear levers.

22. In a wrapping machine, a statimiary guide, a slide adapted to be reciprocated rectilinearly thereon, a device fixed on the slide and adapted to end fold a bottom part of a wrapper on a package during rectilinear reciprocating movement of the slide, a single multiple bladed member pivoted on the slide to reciprocate rectilinearly therewith and adapted to swing and end fold rear and top parts of the wrapper on said package, and means for automatically reciprocating the slide and for swinging said member.

23. In a wrapping machine, a stationary guide, a slide adapted to be reciprocated vertically thereon, a device fixed on the slide and adapted to end told one part of a wrapper on a package during vertical reciprocating movement of the slide, a single multiple bladed member pivoted on the slide to more vertically therewith and adapted to swing forwardly and rearwardly and end told other parts of the wrapper on said package, means; for automatically reciprocating the slide nd the multiple bladed member vertically, and

means for swinging said multiple bladed member forwardly and rearwardly during reciprocating movement of said slide.

24. In a wrapping machine, a stationary guide, slide adapted to be reciprocated rectilinearly thereon, a device fixed on the slide and adapted to end fold one part of a wrapper on a package during rectilinear reciprocating movement of the slide, a multiple bladed member pivoted on the slide to move rectilinearly therewith and adapted to swing and end fold other parts of the wrapper on said package, and means for automatically reciprocating said slide and for swinging said multiple bladed member.

25. In a wrapping machine, a stationary guide, a slide adapted to be reciprocated rectilinearly thereon, a folding plate fixed on the slide and adapted to end fold one part of a wrapper on a package during rectilinear reciprocating movement of the slide, a member pivoted on the slide to reciprocate rectilinearly therewith, a single blade fixed on said member to swing therewith and formed to end fold other parts of the wrapper on said package, means for automatically reciprocating the slide, the blade carrying member, and the blade, and means for swinging said member and the blade during reciprocating movement of the slide and the folding plate.

26. In a wrapping machine, a stationary guide, a slide adapted to be reciprocated rectilinearly thereon, a single multiple bladed member pivoted on the slide to move rectilinearly therewith and adapted to swing and end fold different parts of a wrapper on a package, means for automatically reciprocating the slide and the multiple bladed member rectilinearly, and a stationary cam for swinging the moving multiple bladed member in one direction whereby it may end fold said parts of the wrapper on said package.

27. In a wrapping machine, a stationary guide, a slide adapted to be reciprocated rectilinearly thereon, a single multiple bladed member pivoted on the slide and adapted to successively end fold difierent parts of a wrapper on a package during rectilinear reciprocating movement of the slide and the multiple bladed member, means for automatically reciprocating the slide and the multiple bladed member, and a plurality of stationary cams for swinging the moving multiplebladed member in one direction whereby it may successively end fold said parts of the wrap per on said package.

28. In a wrapping machine, a reciprocating slide, a member pivoted thereon and provided with a plurality of folding blades formed integrally with each other, and means for swinging said member during reciprocating movement of said slide, whereby the blades successively fold in difi'erent parts of a wrapper on a package.

29. In a wrapping machine, a stationary guide, a slide adapted to be reciprocated rectilinearly thereon, a single folding blade pivoted on the slide and having portionsof different configurations adapted to successively guide, a slide adapted to be reciprocated vertically thereon, a folding blade pivoted on the slide to swing forwardly and rearwardly about a horizontal pivot, said blade having portions of different configurations adapted to successively end fold diflerent parts of a wrapper, and means for operating the folding blade comprising mechanism for reciprocating the slide and the blade vertically on said guide and a stationary cam for swinging said blade forwardly when it is moved upwardly with said slide.

31. In a wrapping machine, a stationary guide, a slide adapted to be reciprocated vertically thereon, a folding blade pivoted on the slide to swing forwardly and rearwardly about a horizontal pivot, said blade having portions of different configurations adapted to successively end fold different parts of a wrapper, mechanism for reciprocating the slide and the blade vertically on said guide, a stationary cam for swinging the blade forwardly when it is moved upwardly with the slide, and a spring for swinging said blade rearwardly when it is moved downwardly with said slide.

32. In a wrapping machine, a blade unit comprising a plurality of integrally connected folding blades of different configuration adapted to end fold different parts of a wrapper, a stationary guide, and mechanism for operating the blade unit comprising a member pivotally mounting the same and reciprocating in said guide and a plurality of stationary cams successively adapted to swing the blade unit at intervals in one direction on said reciprocating member.

33. In a wrapping machine, an integrally formed multiple bladed folding device, means slidably and pivotally mounting the same, a stationary guide for said means, and mechanism for reciprocating said means and for swinging said multiple bladed folding device in opposite directions.

34. In a wrapping machine, a slidably mounted member, a stationary guide therefor, means for reciprocating the slidably mounted member rectilinearly on said stationary guide, a single multiple bladed folder pivoted on said member and adapted to successively end fold difierent parts of awrapper, a roller journalled on the folder, a stationary cam adapted to engage said roller and swing the folder When the slidably mounted member is moved in one direction, and a spring for swinging the folder when the slidably mounted member is moved in the opposite direction.

35. In a wrapping machine, a slidably and pivotally mounted folding blade having portions of diflerent configuration adapted to successively end fold different parts of a Wrapper and receiver one of said parts therebetween prior to folding thereof, and means for reciprocating and swinging the folding blade to fold the parts of the Wrapper as aforesaid.

In testimony whereof I have signed this specification.

OSCAR SANDBERG. 

